Few people understand the importance of closely matched blood better than Vesha Jamison. Not only does Vesha work for the Red Cross, but her son, Dreylan, has lived with sickle cell disease since birth. Diagnosed through newborn screening, Dreylan received his first blood transfusion at just 9 months old and has relied on blood donors ever since. Now 16, Dreylan continues to receive regular transfusions to help manage his condition. At a recent appointment, his doctor asked Vesha whether he could accept a good match now or wait for the closest match. Questions like these weigh heavily on Vesha, because blood transfusions are an essential part of care for many families living with sickle cell disease. But finding the right blood can take more than just a matching blood type. Over time, patients who receive frequent transfusions can develop antibodies that may trigger immune reactions to donated blood, making closely matched blood especially important. "Even if the units are availa...